See video on Amazon.com Positive: no need for adjustment or setting, remote control and the laser work well as long as the fine and discreet USB key has been inserted into the computer. Unfortunately, after a few months of use, here are the points (very) negative: - False contacts operate the "next slide" inadvertently; - The batteries run overnight when they are new. Finally, this is not good and I recommend the purchase (plastic gadget unnecessarily product which only serves to further pollute our environment ...)
After writing this review, I opened the box (see attached video): two red lights stay on permanently. Even if they do not consume much energy, battery life is inevitably affected ... Can anyone tell me if this is normal? Thank you!
